Bug 10081 – Parallel port IRQ not found

Bug 10081 - Parallel port IRQ not found

Summary:	Parallel port IRQ not found

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	modutils (Show other bugs)
Sub Component:
Version:	6.1
Hardware:	i386 Linux

Priority	medium Severity medium
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Assigned To:	Michael K. Johnson
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Reported:	2000-03-09 01:29 EST by davidhinz
Modified:	2008-05-01 11:37 EDT (History)
CC List:	0 users

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Doc Type:	Bug Fix
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Last Closed:	2000-03-09 11:14:58 EST
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Description davidhinz 2000-03-09 01:29:27 EST

RedHat 6.1
Kernel 2.2.12-20

Using a Gateway 486DX2-50V system the parallel port IRQ is not found when
the system boots.  Even after disabling the parallel port in the BIOS and
adding a new multi-I/O card (2 serial, 1 parallel port) the IRQ is still
not found.  I've tried ECP, EPP, and normal parallel port modes.  The
/proc/ioport file shows parport0 at x378-x37A.  But /proc/interrupts does
not show IRQ 7 as the board is configured.  I've also tried IRQ's 12 and
15, but they don't show up either.  The /proc/parport/0/devices, hardware,
irq, and autoprobe files are empty (and never change.)

I've loaded the latest version of modutils-2.3.9-6.i386

The kernel has not been rebuilt and only the modutils package above has
been added.

Printing from the port does work (sometimes), but is not very reliable.
When trying to use the "Postscript test" from printtool I keep getting
buffer overruns at the printer.

Comment 1 Bill Nottingham 2000-03-09 11:14:59 EST

Add:

options parport_pc io=0x378 irq=7

to /etc/conf.modules, and then reload the lp driver
('modprobe -r lp, modprobe lp')

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